The group brought the heart of London to a standstill as they tried to march from the Home Office headquarters to Downing Street.

The crowd, shouting “May must go”, “justice for Grenfell” and “blood on your hands”, were met with a cordon of police officers as they marched up Horseguards Parade, coming to a stop outside the entrance to Downing Street.

Grenfell Tower protesters hold placards

Chants of "Justice for Grenfell" ring out through Westminster as protesters take their message on an impromptu march to Downing Street pic.twitter.com/Zto4tAcp1s

Organisers estimated at least 1,400 were involved, with many waving placards.

Chris Imafidon, whose home overlooks Grenfell Tower, gave an emotional address to the crowd, holding a poster for one of the young children missing in one hand and a scorched piece of cladding in the other.

Earlier, north Kensington Chris Imafadon explains why he wanted to be at the Grenfell protest in Westminster pic.twitter.com/KCdPzBpYMW